Dyfyniad APA

Watkins, L. (1981). Environmental impact of roads and traffic. Applied Science Pub.

Dyfyniad Arddull Chicago

Watkins, L.H. Environmental Impact of Roads and Traffic. London: Applied Science Pub, 1981.

Dyfyniad MLA

Watkins, L.H. Environmental Impact of Roads and Traffic. Applied Science Pub, 1981.

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